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Note 3 - Loans Receivable and Allowance for Credit Losses on Loans - Loan Modifications to Borrowers Experiencing Financial Difficulty (Details) - USD ($) $ in Thousands | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2024 | Dec. 31, 2023
Payment Deferral [Member] | Commercial Real Estate Portfolio Segment [Member] |  |
Amortized cost basis | $ 1,130 | $ 1,088
% of total loan type | 0.30% | 0.30%
Weighted-average period (Year) | 2 years 3 months 18 days | 1 year 6 months
Commercial And Industrial [Member] | Extended Maturity and Interest Rate Reduction [Member] | Commercial Business Portfolio Segment [Member] |  |
Amortized cost basis |  | $ 2,940
% of total loan type |  | 1.20%
Weighted-average period (Year) |  | 5 years
Pre-modification % |  | 7.50%
Post-modification % |  | 4.10%

X
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- Definition Percentage of post-modification weighted average contractual interest rate of financing receivable modified for debtor experiencing financial difficulty. + References No definition available. + Details
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